diff --git a/src/cmd/6g/gen.c b/src/cmd/6g/gen.c
index e15a9e20ac..babaebbba8 100644
--- a/src/cmd/6g/gen.c
+++ b/src/cmd/6g/gen.c
@@ -455,10 +455,9 @@ swgen(Node *n)
 		}
 
 		// put in the break between cases
-		if(any) {
+		if(any)
 			patch(gbranch(AJMP, T), breakpc);
-			any = 0;
-		}
+		any = 1;
 
 		// over case expressions
 		c2 = listfirst(&save2, &c1->left);
diff --git a/src/cmd/gc/const.c b/src/cmd/gc/const.c
index 2188178a69..90eaff269e 100644
--- a/src/cmd/gc/const.c
+++ b/src/cmd/gc/const.c
@@ -63,12 +63,16 @@ convlit(Node *n, Type *t)
 			break;
 		}
 		if(isfloat[et]) {
+			Mpint *xv;
+
 			// int to float
-			if(mpcmpfltflt(n->val.u.fval, minfltval[et]) < 0)
+			xv = n->val.u.xval;
+			if(mpcmpfixflt(xv, minfltval[et]) < 0)
 				goto bad2;
-			if(mpcmpfltflt(n->val.u.fval, maxfltval[et]) > 0)
+			if(mpcmpfixflt(xv, maxfltval[et]) > 0)
 				goto bad2;
-			mpmovefixflt(n->val.u.fval, n->val.u.xval);
+			n->val.u.fval = mal(sizeof(*n->val.u.fval));
+			mpmovefixflt(n->val.u.fval, xv);
 			n->val.ctype = CTFLT;
 			break;
 		}
@@ -76,12 +80,16 @@ convlit(Node *n, Type *t)
 
 	case Wlitfloat:
 		if(isint[et]) {
+			Mpflt *fv;
+
 			// float to int
-			if(mpcmpfixfix(n->val.u.xval, minintval[et]) < 0)
+			fv = n->val.u.fval;
+			if(mpcmpfltfix(fv, minintval[et]) < 0)
 				goto bad2;
-			if(mpcmpfixfix(n->val.u.xval, maxintval[et]) > 0)
+			if(mpcmpfltfix(fv, maxintval[et]) > 0)
 				goto bad2;
-			mpmovefltfix(n->val.u.xval, n->val.u.fval);
+			n->val.u.xval = mal(sizeof(*n->val.u.xval));
+			mpmovefltfix(n->val.u.xval, fv);
 			n->val.ctype = CTINT;
 			break;
 		}
diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h
index 16efdc9cb9..47f1f54f41 100644
--- a/src/cmd/gc/go.h
+++ b/src/cmd/gc/go.h
@@ -471,6 +471,8 @@ void	mkpackage(char*);
 /*
  *	mparith1.c
  */
+int	mpcmpfixflt(Mpint *a, Mpflt *b);
+int	mpcmpfltfix(Mpflt *a, Mpint *b);
 int	mpcmpfixfix(Mpint *a, Mpint *b);
 int	mpcmpfixc(Mpint *b, vlong c);
 int	mpcmpfltflt(Mpflt *a, Mpflt *b);
diff --git a/src/cmd/gc/go.y b/src/cmd/gc/go.y
index f3060e02f3..a997193d45 100644
--- a/src/cmd/gc/go.y
+++ b/src/cmd/gc/go.y
@@ -708,7 +708,7 @@ pexpr:
 	{
 		$$ = $2;
 	}
-|	pexpr '.' sym1
+|	pexpr '.' sym2
 	{
 		$$ = nod(ODOT, $1, newname($3));
 	}
@@ -812,13 +812,13 @@ name_name:
 	}
 
 new_name:
-	sym2
+	sym1
 	{
 		$$ = newname($1);
 	}
 
 new_type:
-	sym2
+	sym1
 	{
 		$$ = newtype($1);
 	}
@@ -832,17 +832,36 @@ sym:
 sym1:
 	sym
 |	key1
-|	key2
 
 sym2:
 	sym
+|	key1
 |	key2
 
 /*
  * keywords that we can
+>>>> ORIGINAL go/src/cmd/gc/go.y#8
+==== THEIRS go/src/cmd/gc/go.y#9
  * use as field names
+==== YOURS go/src/cmd/gc/go.y
+ * use a variable/type names
+<<<<
  */
 key1:
+	LNIL
+|	LTRUE
+|	LFALSE
+|	LIOTA
+|	LLEN
+|	LPANIC
+|	LPRINT
+|	LNEW
+|	LBASETYPE
+
+/*
+ * keywords that we can
+ */
+key2:
 	LPACKAGE
 |	LIMPORT
 |	LEXPORT
@@ -871,8 +890,21 @@ key1:
 |	LRANGE
 |	LIGNORE
 
-/*
- * keywords that we can
+>>>> ORIGINAL go/src/cmd/gc/go.y#8
+ * use a variable/type names
+ */
+key2:
+	LNIL
+|	LTRUE
+|	LFALSE
+|	LIOTA
+|	LLEN
+|	LPANIC
+|	LPRINT
+|	LNEW
+|	LBASETYPE
+
+==== THEIRS go/src/cmd/gc/go.y#9
  * use as variable/type names
  */
 key2:
@@ -886,6 +918,8 @@ key2:
 |	LNEW
 |	LBASETYPE
 
+==== YOURS src/cmd/gc/go.y
+<<<<
 name:
 	lname
 	{
@@ -1394,7 +1428,7 @@ export:
 	{
 		exportsym($1);
 	}
-|	sym '.' sym1
+|	sym '.' sym2
 	{
 		exportsym(pkglookup($3->name, $1->name));
 	}
@@ -1578,7 +1612,7 @@ hidden_import:
 	}
 
 isym:
-	sym '.' sym1
+	sym '.' sym2
 	{
 		$$ = nod(OIMPORT, N, N);
 		$$->osym = $1;
@@ -1586,7 +1620,7 @@ isym:
 		$$->sym = $3;
 		renamepkg($$);
 	}
-|	'(' sym ')' sym '.' sym1
+|	'(' sym ')' sym '.' sym2
 	{
 		$$ = nod(OIMPORT, N, N);
 		$$->osym = $2;
diff --git a/src/cmd/gc/lex.c b/src/cmd/gc/lex.c
index 200960dff9..2087ed5eab 100644
--- a/src/cmd/gc/lex.c
+++ b/src/cmd/gc/lex.c
@@ -1022,8 +1022,8 @@ void
 lexinit(void)
 {
 	int i, etype, lex;
-	Sym *s;
 	Type *t;
+	Sym *s;
 
 	besetptr();
 
diff --git a/src/cmd/gc/mparith1.c b/src/cmd/gc/mparith1.c
index 189e43af6f..a787f7d895 100644
--- a/src/cmd/gc/mparith1.c
+++ b/src/cmd/gc/mparith1.c
@@ -6,6 +6,28 @@
 
 /// uses arihmetic
 
+int
+mpcmpfixflt(Mpint *a, Mpflt *b)
+{
+	char buf[500];
+	Mpflt c;
+
+	sprint(buf, "%B", a);
+	mpatoflt(&c, buf);
+	return mpcmpfltflt(&c, b);
+}
+
+int
+mpcmpfltfix(Mpflt *a, Mpint *b)
+{
+	char buf[500];
+	Mpflt c;
+
+	sprint(buf, "%B", b);
+	mpatoflt(&c, buf);
+	return mpcmpfltflt(a, &c);
+}
+
 int
 mpcmpfixfix(Mpint *a, Mpint *b)
 {
diff --git a/src/cmd/gc/subr.c b/src/cmd/gc/subr.c
index 11cb870f9a..0234700fc3 100644
--- a/src/cmd/gc/subr.c
+++ b/src/cmd/gc/subr.c
@@ -1064,7 +1064,7 @@ Nconv(Fmt *fp)
 			snprint(buf1, sizeof(buf1), "S\"%Z\"", n->val.u.sval);
 			break;
 		case CTBOOL:
-			snprint(buf1, sizeof(buf1), "B%lld", n->val.u.bval);
+			snprint(buf1, sizeof(buf1), "B%d", n->val.u.bval);
 			break;
 		case CTNIL:
 			snprint(buf1, sizeof(buf1), "N");
diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c
index ad96e2e2b1..36021ec0c9 100644
--- a/src/cmd/gc/walk.c
+++ b/src/cmd/gc/walk.c
@@ -1399,11 +1399,11 @@ Node*
 prcompat(Node *n)
 {
 	Node *l, *r;
+	Node *on;
 	Type *t;
 	Iter save;
 	int w;
 	char *name;
-	Node *on;
 
 	r = N;
 	l = listfirst(&save, &n);
diff --git a/test/ken/rob2.go b/test/ken/rob2.go
index b18435dfca..f7bec7bb78 100644
--- a/test/ken/rob2.go
+++ b/test/ken/rob2.go
@@ -162,35 +162,34 @@ func NextToken()
 		c = Get();
 	}
 	switch c {
-		case EOF:
-			token = EOF;
-		case '(':
-		case ')':
-			token = c;
-			break;
-		default:
-			for i = 0; i < 100 - 1; {	// sizeof tokenbuf - 1
-				tokenbuf[i] = convert(byte, c);
-				i = i + 1;
-				c = Get();
-				if c == EOF {
-					break;
-				}
-				if WhiteSpace(c) || c == ')' {
-					peekc = c;
-					break;
-				}
+	case EOF:
+		token = EOF;
+	case '(', ')':
+		token = c;
+		break;
+	default:
+		for i = 0; i < 100 - 1; {	// sizeof tokenbuf - 1
+			tokenbuf[i] = convert(byte, c);
+			i = i + 1;
+			c = Get();
+			if c == EOF {
+				break;
 			}
-			if i >= 100 - 1 {	// sizeof tokenbuf - 1
-				panic("atom too long\n");
-			}
-			tokenlen = i;
-			tokenbuf[i] = nilchar;
-			if '0' <= tokenbuf[0] && tokenbuf[0] <= '9' {
-				token = '0';
-			} else {
-				token = 'A';
+			if WhiteSpace(c) || c == ')' {
+				peekc = c;
+				break;
 			}
+		}
+		if i >= 100 - 1 {	// sizeof tokenbuf - 1
+			panic("atom too long\n");
+		}
+		tokenlen = i;
+		tokenbuf[i] = nilchar;
+		if '0' <= tokenbuf[0] && tokenbuf[0] <= '9' {
+			token = '0';
+		} else {
+			token = 'A';
+		}
 	}
 }
 
@@ -267,16 +266,15 @@ func Parse() *Slist
 	} else {
 		// Atom
 		switch token {
-			case EOF:
-				return nil;
-			case '0':
-				slist = atom(atoi());
-			case '"':
-			case 'A':
-				slist = atom(0);
-			default:
-				slist = nil;
-				print("unknown token"); // token, tokenbuf);
+		case EOF:
+			return nil;
+		case '0':
+			slist = atom(atoi());
+		case '"', 'A':
+			slist = atom(0);
+		default:
+			slist = nil;
+			print("unknown token: ", token, "\n");
 		}
 		NextToken();
 		return slist;